Baffle-wall support



June 8, 1926. 1,588,118

M. |PTAK BA'FFLE WALL SUPPORT.

Filed Sept. 1'7, 1923 2 Sheets-*Sheet l June s, 1926. 1,588,1 18

M. LlPTAK BAFFLE WALL SUPPORT Filed Sept. 17, 1923 2 Sheets4Sheet 2 Patented .lune 8, 1.926. y

'UNITED STATES PATENT GFFICE.

MICHAEL LIPTAI, OF ST. PAUL, MINNESOTA.

BAFFLE-WALL SUPPORT.

Application ledseptember 17, 1923. Serial No. 663,109.

My present invention relates to furnaces or boiler settings and provides certain highly important'-improvements in the construction and manner of supporting inclined baffle walls and, more especially, those used tain of the features found in the wall structure well known to the trade as the Liptak interlocking furnace wall, but the present application incorporates certain novel and highly important features made necessary or desirable because of the inclined arrangement of the wall itself. The chief novelty of the present invention, however, is found in the manner in which the inclined baffle wall is supported and in the formation of the wall structure between the base of the inclined baiiie wall and the inner extremity of the furnace arch.

In the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings:

Figfl is a fragmentary vertical section taken through a furnace and illustrating the several features of my invention incorporated therein;

Fig. 2 is a transverse section taken ap- 'proxlmately on the line 2 2 of Fig. 1, some parts being broken away;

Fig. 3 is a fragmentary perspective, some parts being sectioned, particularly illustrating the novel features of the structure that connects the base of the baflie wall to the upturned inner end of the furnace arch;

Figs. 4 and 5 are perspectives showing one of the shelf-forming brackets;

Figs. 6 and 7 are perspectives showing another of the shelf-forming brackets; and

Figs. S and 9 are perspectives showing one of the wedge-shaped battle wall supporting shoes.

Of the standard or ordinary parts of the furnace, the numeral 10 indicates the side walls, 11 the lower` rear wall, 12 the line of the Stoker, 13 the furnace arch, and 14 an upper rear Wall supported in the usual way by transverse beams 15, the ends of which are set into the side walls 10.

As already indicated, the furnace arch 13 may be of any approved construction but, as shown, is of the type known as a single suspension arch, and comprises arch-forming blocks hung on beams 16, which, in turn, are supported by transverse cross beams 17 and 18 arrangedin pairs. As shown, the beams 17 are I-beams and the beams 18 are channels, and the ends of said beams are set into the side walls 10. Also, as shown, the inner ends of the beam 16 are curved upwardly and certain of the arch-forming blocks are wedge-shaped and are' slid onto the upturned ends of said beams so that they upwardly curve the arch to a point where 1t 1s adapted to align with avertical Wall, that is, the upper surface of the last arch block is in a horizontal plane.

In the preferred manner of carrying out my lnvention, I extend above the transverse beams 17 a similar pair of transverse I-beams 19, the ends of which are also set into the side walls 10.

The oblique baiiie wall is primarily supported from the beams 19, and to afford a bearing surface for the bottom of the lowermost main baffle wall block or tile, I provide an oblique foundation therefor made up of a multiplicity of aligned cast metal shoes 20. These shoes 20 are wedge-shaped in vertical section so that the bases thereof will rest on the horizontal tops of the beams 19 and the tops of said shoes will extend at a right angle to the body of the oblique baiie wall. It is further important to note that these shoes 20 are hollow vor flange structures comprising top and bottom plates and vertical connecting webs and on their bottoms they are provided with laterally spaced bearlng anges 21 that are notched so that they interlock with and will not slide upon the upper anges of the beams 19. These anges also permit free circulation of air between the tops of the beams and the bottoms of the shoes, and to further facilitate circulation of air to prevent overheating of the shoes, they are shown as provided in their bottom plates with air'pas sages 22. At' their lower or outer extremities, the shoes are provided with upstanding bearing anges 23, and at the inner edges of their bottom plates they are provided with upstanding anchor lflanges 24. As a back support for the oblique battle wall, laterally spaced oblique beams 25, preferably having T-shaped cross sections, are placed with their outer ends on the top plates of the shoes, with their backs against the bearing flanges 23 thereof, (see particularly Fig. 3), and with the backs of the upper ends of said beams bearing against the top flange of the inner of the two transverse beams 15. Flat slab-like tiles 26 are laid against the laterally projecting flanges of the beams 25 so as to close the space between the beams and to afford a good back support against which to build up the blocks or tiles of the inclined baiiie wall. y

The baffle wall is made up of what may be properly designated as a permanent outer wall and a replaceable inner wall. The perma-nent outer wall, as preferably designed, is made up ofl large tiles or blocks 27 and interposed belts of lire brick 28'.V The relatively large blocks or tiles 27 constitute the anchoring members of the outer wall and preferablyare made up of upper and lower sections, or, in yother Words, said tiles are longitudinally split. The sections of these anchoring tiles are formed with pockets 29 and with lock shoulders 3() at the bottoms of said pockets.

The replaceable inner wall is made up of horizontal rows of shelf-forming blocks 31, key blocks 32, and interposed belts of lire brick 33. The shelf-forming blocks 31 are long enough to project through the replaceable outer wall and into the pockets 29 and anchoring tiles 27, and at their projected ends they are formed with depending portions that afford lock shoulders 34 adapted to interlock with the shoulders 30 of the said pockets. inserted into the pockets on top of the shelfforming blocks 31, the latter will be positively interlocked to the cooperating anchoring tiles. The lire brick belts 33 are laid on the key blocks 32, so that each belt is supported by an underlying row of shelfforming blocks 31 and, of course, theload on the shelf-forming block would be considerably relieved by the frictional Contact between the inclined belts 33 and underlying belts 28. Nevertheless, when certain of the key blocks 32 are removed, the cooperating shelf-forming blocks 31 may be readily removed and replaced. Moreover, any one or more of the fire bricks 33 may be replaced 1n any particular` belt of the replaceable wall without disturbing lire bricks in an overlying belt, because the overlying belt will be independently supported by its own row of shelf-forming blocks 31. The uppermost ire brick belt 33 is eX- tended to and joined with the brickwork o f the upper Wall-14. However, to close the 7hen the key blocks 32 are extremity of the fire arch, I provide a specially designed arrangement which inshelf-forming lower portions 38. The flanges 37 are adapted to detachably rest upon and to be gravity-interlocked with the upper flange of the innermost lower I-beam 17. The brackets 36 are further provided with bearing lugs 39 that engage the web of the cooperating beam 19 and hold the shelfforming portions 38 horizontally projected immediately above the belt 34. Also, it is important to note that the projecting ends of the shelf-forming portions 38 are formed with upstanding lock anges 40 that engage notches of the under surfaces of the tiles 35 and hold the latter in proper alignment. Air can circulate freely upward between the bearing lugs 39, and to permit circulationl of air between the upper flanges ofthe beams 19, the hook-like upper flanges 37 of the hanger brackets are notched or cut away at 41. The circulation of air is, of course, important to prevent overheating of the metal parts.

Preferably but not necessarily, a layer or course of fire bricks 42 is laid on the tiles 35, and above the same is located a horizontal row of angular base tiles or blocks 43. These base blocks are not, however, supported directly on the underlying blocks but are independently supported by means of cast hanger brackets 44, which, as shown, comprise vertical and horizontal plates, the

latter of which afford shelves for directly supporting said blocks 43 and are provided` with upstanding lock ribs 45 that engage' notches in said blocks and hold the latter in true alignment. At the upper edges of the vertical plates of these anchor brackets are hook-like flanges 46 thatengage upstanding lock lianges 47 formed on the inwardly projecting edges of the horizontal plates of the shoes 20. Near `their lower extremities, the vertical plates of said brackets 44 are provided with bearing lugs 48 that engage the web of the adjacent innermost beam 15 and cause the horizontal plates of said brackets to stand in horizontal positions.

Air can freely circulate upward between the lugs 48 and between the hook lugs 46, and to further facilitate circulation of the air, the vertical plates of the brackets 44 are bottoms of the lowermostcourse of shelfforming blocks 31 is built in a belt 53 of fire bricks. Those portions of the base tiles 43 that are exposed to the flames are vertically extended where they align with the inner ends of the bricks 34 and 42 and blocks 35, but their oblique surfaces 52 are aligned with the inner surface of the replaceable wall.

Generally stated, the invention above described makes the construction and maintenance of the inclined baffle wall a comparatively easy matter. Not only can the replaceable portion of the baffle wall proper be readily replaced in whole or in any particular part, but the wall-forming elements 34, 35 and 42, which correspond to what, in similar structures, is usually ldesignated as the curtain Wall, may be removed and independently replaced without disturbing eithertthe arch or the baile wall. The bricks of the belt 34 form a filler between the overlying blocks 35, which are supported by the brackets 36, and the last blocks at the upturned inner end of the furnace arch. They may be removed without disturbing the blocks 35 or any of the wall-forming ele ments above the same, and when they are removed, they permit the arch-forming blocks to be readily slid off from the beams 16. When the bricks 42 are removed, the base blocks 43 remain supported by the brackets 44, so that the inclined baffle wall is not disturbed. Of course, the bricks of the belt 53 can also be removed and replaced without disturbing the main body or upper portion of the inclined baffle wall. The above noted features make it a very easy matter to make repairs, both in the arch and in the bailie wall, and they especially make it an easy matter to replace those parts of the wall that are between the arch and the base proper of the inclined baille wall and which are subjected to intense heat from the flames that sweep .aga-inst the same. Also, the arrangement of beams and hangers distributes the weight of the baiiie wall, arch and intermediate portions among quite a large number of beams and the beams are so` arranged that they may be set a considerable distance from the hot refractory blocks or tiles and so that there is a free circulation of air around the said beams and other metallic parts. l f

What I claim is:

1. A -baiie wall structure comprising transverse beams, shoes seated on said beams and having voblique upper faces, laterally spaced flanged metal barsseated on the lower ends of said shoes and suitably su ported at their upper ends,'backforming ti es directly supported by said bars, an outer wall built on the oblique faces of said shoes and against said back-forming tiles, and a replaceable in. ner wall comprising belts of lire bricks and rows Iof shelf-forming tiles, the latter projecting into said outer wall.

2. The structure defined in claim 1 in fur- 'ther combination with brackets supported by 4brackets supported on said overlying beam,

base blocks supported on said upper brackets and having beveled faces supporting the lower portion of the inclined baiile Wall, blocks filling the space between the inner end of the -arch and said lower bracket, and blocks filling the space between said upper and lower brackets and supported by said lower brackets'. .i

4. The structure defined in claim `3 in which said upper and lower brackets are Idetachably hung and independently replaceable and in which thesaid filling blocks or elements are independently Ieplaceable.

5. The structure --defned in claim 3 in which said brackets are formed. with air passages permitting circulation of air around the same. I

In testimony whereof I aix my signature.

MICHAEL LIPTAK. 

